BQ24751B Datasheet, PDF (14/38 Pages) Texas Instruments – Host-Controlled Multi-Chemistry Battery Charger with Low Iq and System Power Selector

Not Recommended For New Designs
bq24751B
SLUS835A – JULY 2008 – REVISED MARCH 2009 .......................................................................................................................................................... www.ti.com
SYSTEM SELECTOR ON ADAPTER REMOVAL WITH
390 µF SYS-TO-PGND SYSTEM CAPACITOR
VBAT
VSYS
VACDRV
VBATDRV
SYSTEM SELECTOR LEARN TURN-ON WITH
390 µF SYS-TO-PGND SYSTEM CAPACITOR
t − Time = 2 ms/div
Figure 21.
SYSTEM SELECTOR LEARN TURN-OFF WITH
390 µF SYS-TO-PGND SYSTEM CAPACITOR
Figure 23.
SELECTOR GATE DRIVE VOLTAGES, 700 MS DELAY
AFTER ACDET
V_ACDRV
V_SYS
V_ACOP
I_IN
t − Time = 1 ms/div
Figure 25.
Figure 22.
SYSTEM SELECTOR ON ADAPTER INSERTION
VACPWR
VACDRV
VACGOOD
IL
t − Time = 400 ms/div
Figure 24.
CHARGER on ADAPTER REMOVAL
V_IN
V_BAT
I_L
t − Time = 200 ms/div
Figure 26.
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